test/jdk/java/io/File/WinTrailingSpace.java

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import java.io.File;
import java.io.IOException;

import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;

/* @test
 * @bug 8354450
 * @requires os.family == "windows"
 * @summary Verify behavior for file names with a trailing space
 * @run junit WinTrailingSpace
 */
public class WinTrailingSpace {
    private static final String FILENAME_NO_TRAILING_SPACE = "foobargus";
    private static final String FILENAME_TRAILING_SPACE = "foobargus ";
    private static final String DIRNAME_TRAILING_SPACE = "foo \\bar\\gus";

    @Test
    public void noTrailingSpace() throws IOException {
        File f = null;
        try {
            f = new File(".", FILENAME_NO_TRAILING_SPACE);
            f.delete();
            f.createNewFile();
            assertTrue(f.exists());
        } finally {
            if (f != null)
                f.delete();
        }
    }

    @Test
    public void trailingSpace() throws IOException {
        File f = null;
        try {
            f = new File(".", FILENAME_TRAILING_SPACE);
            f.delete();
            f.createNewFile();
            assertFalse(f.exists(), "Creation of " + f + " should have failed");
        } catch (IOException expected) {
        } finally {
            if (f != null)
                f.delete();
        }
    }

    @Test
    public void dirTrailingSpace() throws IOException {
        File f = null;
        try {
            f = new File(".", DIRNAME_TRAILING_SPACE);
            f.delete();
            assertFalse(f.mkdirs(), "Creation of " + f + " should have failed");
        } finally {
            if (f != null)
                f.delete();
        }
    }
}